To not have to learn various technologies to develop for the various mobile platforms, I wanted to use only C #.
However I have some doubts, namely:
Is Xamarin Studio free?
With the same code, does the generated application run on all three platforms?
I own a Mac. If I have a project on the Mac that runs on all three platforms, can I open this project on a Windows PC? Can I edit normally, do tests on Android, and does it guarantee that the changes will work on iOS? Will the project continue working when it is reopened on the Mac?
Regarding the graphical interface. How are they made? Only one for all platforms?